Anonymous - that means your hard drive is full, has nothing to do with this application.
Decent app, you cannot delete so you have to start over on words. Also, as previously stated the worlds will overlap and you can't read either. For some reason, I get a 0 in WPM, and it never changes, so I don't know what my words per minute are. App is fun, what I would like is that when i start to type a word, the letters change with what I type. Example, if testies came down, and I typed in test so far, then those letters on the word would be a different color, and as I hit the rest of the letters they would change colors one at a time.